Adding the old stack viewer implementation back, for the debugger.
This commit is contained in:
Guido van Rossum
parent
b658469873
commit
2bb8e72046
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@ -0,0 +1,276 @@
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import string
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import sys
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import os
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from Tkinter import *
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import linecache
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from repr import Repr
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from WindowList import ListedToplevel
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from ScrolledList import ScrolledList
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class StackBrowser:
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def __init__(self, root, flist, stack=None):
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self.top = top = ListedToplevel(root)
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top.protocol("WM_DELETE_WINDOW", self.close)
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top.bind("<Key-Escape>", self.close)
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top.wm_title("Stack viewer")
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top.wm_iconname("Stack")
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# Create help label
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self.helplabel = Label(top,
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text="Click once to view variables; twice for source",
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borderwidth=2, relief="groove")
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self.helplabel.pack(fill="x")
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#
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self.sv = StackViewer(top, flist, self)
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if stack is None:
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stack = get_stack()
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self.sv.load_stack(stack)
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def close(self, event=None):
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self.top.destroy()
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localsframe = None
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localsviewer = None
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localsdict = None
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globalsframe = None
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globalsviewer = None
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globalsdict = None
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curframe = None
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def show_frame(self, (frame, lineno)):
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if frame is self.curframe:
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return
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self.curframe = None
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if frame.f_globals is not self.globalsdict:
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self.show_globals(frame)
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self.show_locals(frame)
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self.curframe = frame
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def show_globals(self, frame):
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title = "Global Variables"
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if frame.f_globals.has_key("__name__"):
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try:
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name = str(frame.f_globals["__name__"]) + ""
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except:
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name = ""
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if name:
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title = title + " in module " + name
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self.globalsdict = None
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if self.globalsviewer:
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self.globalsviewer.close()
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self.globalsviewer = None
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if not self.globalsframe:
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self.globalsframe = Frame(self.top)
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self.globalsdict = frame.f_globals
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self.globalsviewer = NamespaceViewer(
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self.globalsframe,
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title,
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self.globalsdict)
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self.globalsframe.pack(fill="both", side="bottom")
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def show_locals(self, frame):
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self.localsdict = None
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if self.localsviewer:
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self.localsviewer.close()
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self.localsviewer = None
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if frame.f_locals is not frame.f_globals:
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title = "Local Variables"
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code = frame.f_code
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funcname = code.co_name
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if funcname not in ("?", "", None):
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title = title + " in " + funcname
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if not self.localsframe:
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self.localsframe = Frame(self.top)
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self.localsdict = frame.f_locals
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self.localsviewer = NamespaceViewer(
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self.localsframe,
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title,
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self.localsdict)
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self.localsframe.pack(fill="both", side="top")
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else:
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if self.localsframe:
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self.localsframe.forget()
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class StackViewer(ScrolledList):
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def __init__(self, master, flist, browser):
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ScrolledList.__init__(self, master, width=80)
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self.flist = flist
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self.browser = browser
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self.stack = []
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def load_stack(self, stack, index=None):
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self.stack = stack
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self.clear()
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## if len(stack) > 10:
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## l["height"] = 10
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## self.topframe.pack(expand=1)
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## else:
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## l["height"] = len(stack)
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## self.topframe.pack(expand=0)
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for i in range(len(stack)):
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frame, lineno = stack[i]
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try:
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modname = frame.f_globals["__name__"]
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except:
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modname = "?"
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code = frame.f_code
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filename = code.co_filename
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funcname = code.co_name
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sourceline = linecache.getline(filename, lineno)
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sourceline = string.strip(sourceline)
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if funcname in ("?", "", None):
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item = "%s, line %d: %s" % (modname, lineno, sourceline)
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else:
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item = "%s.%s(), line %d: %s" % (modname, funcname,
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lineno, sourceline)
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if i == index:
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item = "> " + item
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self.append(item)
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if index is not None:
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self.select(index)
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def popup_event(self, event):
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if self.stack:
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return ScrolledList.popup_event(self, event)
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def fill_menu(self):
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menu = self.menu
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menu.add_command(label="Go to source line",
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command=self.goto_source_line)
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menu.add_command(label="Show stack frame",
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command=self.show_stack_frame)
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def on_select(self, index):
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if 0 <= index < len(self.stack):
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self.browser.show_frame(self.stack[index])
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def on_double(self, index):
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self.show_source(index)
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def goto_source_line(self):
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index = self.listbox.index("active")
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self.show_source(index)
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def show_stack_frame(self):
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index = self.listbox.index("active")
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if 0 <= index < len(self.stack):
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self.browser.show_frame(self.stack[index])
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def show_source(self, index):
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if not (0 <= index < len(self.stack)):
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return
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frame, lineno = self.stack[index]
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code = frame.f_code
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filename = code.co_filename
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if os.path.isfile(filename):
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edit = self.flist.open(filename)
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if edit:
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edit.gotoline(lineno)
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def get_stack(t=None, f=None):
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if t is None:
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t = sys.last_traceback
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stack = []
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if t and t.tb_frame is f:
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t = t.tb_next
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while f is not None:
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stack.append((f, f.f_lineno))
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if f is self.botframe:
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break
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f = f.f_back
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stack.reverse()
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while t is not None:
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stack.append((t.tb_frame, t.tb_lineno))
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t = t.tb_next
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return stack
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def getexception(type=None, value=None):
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if type is None:
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type = sys.last_type
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value = sys.last_value
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if hasattr(type, "__name__"):
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type = type.__name__
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s = str(type)
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if value is not None:
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s = s + ": " + str(value)
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return s
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class NamespaceViewer:
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def __init__(self, master, title, dict=None):
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width = 0
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height = 40
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if dict:
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height = 20*len(dict) # XXX 20 == observed height of Entry widget
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self.master = master
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self.title = title
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self.repr = Repr()
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self.repr.maxstring = 60
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self.repr.maxother = 60
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self.frame = frame = Frame(master)
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self.frame.pack(expand=1, fill="both")
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self.label = Label(frame, text=title, borderwidth=2, relief="groove")
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self.label.pack(fill="x")
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self.vbar = vbar = Scrollbar(frame, name="vbar")
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vbar.pack(side="right", fill="y")
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self.canvas = canvas = Canvas(frame,
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height=min(300, max(40, height)),
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scrollregion=(0, 0, width, height))
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canvas.pack(side="left", fill="both", expand=1)
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vbar["command"] = canvas.yview
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canvas["yscrollcommand"] = vbar.set
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self.subframe = subframe = Frame(canvas)
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self.sfid = canvas.create_window(0, 0, window=subframe, anchor="nw")
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self.load_dict(dict)
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dict = -1
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def load_dict(self, dict, force=0):
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if dict is self.dict and not force:
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return
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subframe = self.subframe
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frame = self.frame
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for c in subframe.children.values():
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c.destroy()
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self.dict = None
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if not dict:
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l = Label(subframe, text="None")
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l.grid(row=0, column=0)
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else:
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names = dict.keys()
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names.sort()
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row = 0
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for name in names:
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value = dict[name]
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svalue = self.repr.repr(value) # repr(value)
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l = Label(subframe, text=name)
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l.grid(row=row, column=0, sticky="nw")
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## l = Label(subframe, text=svalue, justify="l", wraplength=300)
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l = Entry(subframe, width=0, borderwidth=0)
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l.insert(0, svalue)
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## l["state"] = "disabled"
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l.grid(row=row, column=1, sticky="nw")
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row = row+1
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self.dict = dict
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# XXX Could we use a <Configure> callback for the following?
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subframe.update_idletasks() # Alas!
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width = subframe.winfo_reqwidth()
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height = subframe.winfo_reqheight()
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canvas = self.canvas
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self.canvas["scrollregion"] = (0, 0, width, height)
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if height > 300:
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canvas["height"] = 300
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frame.pack(expand=1)
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else:
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canvas["height"] = height
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frame.pack(expand=0)
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def close(self):
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self.frame.destroy()
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